USE OF CARBON POWDER IN FUEL CELL CATALYST, FUEL CELL CATALYST WITH CARBON POWDER, ELECTRODE CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL

The present invention is to provide a carbon powder that can provide a catalyst having excellent durability and a catalyst. A carbon powder for catalyst of the present invention is a carbon powder containing as a main component carbon, which has a BET specific surface area per unit weight of 900 m 2 /g or greater, and a ratio R' (D'/G intensity ratio) of peak intensity for a D'-band (D' intensity) measured in the vicinity of 1620 cm -1 to peak intensity for a G-band (G intensity) measured in the vicinity of 1580 cm -1 by Raman spectroscopy of 0.6 or less.